Primaeval Man in the Valley of the Lea. 135
the required form the flakes would become smaller and
smaller. The smallest flakes were probably pushed off, as
some savages now detach minute flakes by pressure ; this
could have been done with a canine tooth or a boar's tusk,
or a tool known as a "fabricator." Though "fabricators"
Fig. 21.—Anvil-stone, one half actual size.
are pointed out as Neolithic tools by Mr. John Evans, yet,
as far as I know, they have not hitherto been described
amongst Palaeolithic tools; they, however, occur in the
Thames Valley-gravels, and one from Stoke Newington
Common is illustrated one half actual size in fig. 20.